Cita APA (7th ed.)
Ore, Ø. (1967). Invitation to number theory. Mathematical Association of America.
Cita Chicago (17th ed.)
Ore, Øystein. Invitation to Number Theory. Washington, D.C.: Mathematical Association of America, 1967.
Cita MLA (9th ed.)
Ore, Øystein. Invitation to Number Theory. Mathematical Association of America, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.